/*
 * Copyright (C) 2006-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */

package org.alfresco.jlan.server;

import java.util.Vector;

/**
 * Packet Handler List Class
 *
 * @author gkspencer
 */
public class PacketHandlerList {

  //	List of session handlers

  private Vector<PacketHandlerInterface> m_handlers;

  /**
   * Default constructor
   */
  public PacketHandlerList() {
    m_handlers = new Vector<PacketHandlerInterface>();
  }

  /**
   * Add a handler to the list
   *
   * @param handler PacketHandlerInterface
   */
  public final void addHandler(PacketHandlerInterface handler) {
    m_handlers.add(handler);
  }

  /**
   * Return the number of handlers in the list
   *
   * @return int
   */
  public final int numberOfHandlers() {
    return m_handlers.size();
  }

  /**
   * Return the specified handler
   *
   * @param idx int
   * @return PacketHandlerInterface
   */
  public final PacketHandlerInterface getHandlerAt(int idx) {

    //	Range check the index

    if ( idx < 0 || idx >= m_handlers.size())
      return null;
    return m_handlers.get(idx);
  }

  /**
   * Remove a handler from the list
   *
   * @param idx int
   * @return PacketHandlerInterface
   */
  public final PacketHandlerInterface remoteHandler(int idx) {

    //	Range check the index

    if ( idx < 0 || idx >= m_handlers.size())
      return null;

    //	Remove the handler, and return it

    return m_handlers.remove(idx);
  }

  /**
   * Remove all handlers from the list
   */
  public final void removeAllHandlers() {
    m_handlers.removeAllElements();
  }
}
